[PATCH v2 3/7] ACPI / APEI: add OSC APEI bit check for ghes_edac

Toshi Kani
2017-08-03T21:57:49Z

When 'osc_sb_apei_support_acked' is set, it indicates that
the platform supports APEI, firmware-first mode, as ACPI _OSC
capability bit 4, APEI Support, was set in query. While _OSC
is an optional method, platforms with APEI support should
implement it to inform its capability to the OS properly.

Add check to 'osc_sb_apei_support_acked' before calling
ghes_edac_register() to restrict that ghes_edac is enabled
on platforms with APEI support capability set in _OSC.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
---
drivers/acpi/apei/ghes.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index d661d45..49d75eb 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -1139,9 +1139,11 @@ static int ghes_probe(struct platform_device *ghes_dev)
goto err;
}

- rc = ghes_edac_register(ghes, &ghes_dev->dev);
- if (rc < 0)
- goto err;
+ if (osc_sb_apei_support_acked) {
+ rc = ghes_edac_register(ghes, &ghes_dev->dev);
+ if (rc < 0)
+ goto err;
+ }

switch (generic->notify.type) {